Students should be able to:

  • understand how microscopy techniques have developed over time
  • explain how electron microscopy has increased understanding of sub-cellular structures.
  • Limited to the differences in magnification and resolution.
  • An electron microscope has much higher magnification and resolving power than a light microscope. This means that it can be used to study cells in much finer detail. This has enabled biologists to see and understand many more sub-cellular structures.
  1. Students should be able to carry out calculations involving magnification, real size and image size using the formula:
  2. magnification = size of image / size of real object
  3. Students should be able to express answers in standard form if appropriate.